Catalytic hydropyrolysis of carbonaceous material with char recycle

摘要

Disclosed is a method for catalytically hydropyrolyzing carbonaceous material to produce liquid products boiling under about 550 DEG C. with reduced amounts of methane being formed. The process comprises (a) treating the carbonaceous material with as hydrogenation catalyst; (b) contacting the so-treated carbonaceous material with an effective amount of hydrogen, at an effective residence time, at a temperature below the critical temperature of rapid methane formation; (c) recovering the resulting liquids, gases, and char; and (d) recycling the char.